_________ the rhinoceros is carefully protected, it will soon go the way of othe

游客2023-11-08 8

问题 _________ the rhinoceros is carefully protected, it will soon go the way of other extinct spe- cies.

选项 A、If
B、Therefore
C、As long as
D、Unless

答案 D

解析 “UNLESS”引导的条件句，意思是“除非”。

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